[Qemu-devel] [PATCH 8/8] fdc-test: Test state for existing cases more thoroughly

[Kevin Wolf <kwolf@redhat.com>]

This just adds a few additional checks of the MSR and interrupt pin to
the already existing test cases.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 tests/fdc-test.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tests/fdc-test.c b/tests/fdc-test.c
index 3c6c83c..416394f 100644
--- a/tests/fdc-test.c
+++ b/tests/fdc-test.c
@@ -218,6 +218,10 @@ static uint8_t send_read_no_dma_command(int nb_sect, uint8_t expected_st0)
         inb(FLOPPY_BASE + reg_fifo);
     }
 
+    msr = inb(FLOPPY_BASE + reg_msr);
+    assert_bit_set(msr, BUSY | RQM | DIO);
+    g_assert(get_irq(FLOPPY_IRQ));
+
     st0 = floppy_recv();
     if (st0 != expected_st0) {
         ret = 1;
@@ -228,8 +232,15 @@ static uint8_t send_read_no_dma_command(int nb_sect, uint8_t expected_st0)
     floppy_recv();
     floppy_recv();
     floppy_recv();
+    g_assert(get_irq(FLOPPY_IRQ));
     floppy_recv();
 
+    /* Check that we're back in command phase */
+    msr = inb(FLOPPY_BASE + reg_msr);
+    assert_bit_clear(msr, BUSY | DIO);
+    assert_bit_set(msr, RQM);
+    g_assert(!get_irq(FLOPPY_IRQ));
+
     return ret;
 }
 
@@ -403,6 +414,7 @@ static void test_read_id(void)
     uint8_t head = 0;
     uint8_t cyl;
     uint8_t st0;
+    uint8_t msr;
 
     /* Seek to track 0 and check with READ ID */
     send_seek(0);
@@ -411,18 +423,29 @@ static void test_read_id(void)
     g_assert(!get_irq(FLOPPY_IRQ));
     floppy_send(head << 2 | drive);
 
+    msr = inb(FLOPPY_BASE + reg_msr);
+    if (!get_irq(FLOPPY_IRQ)) {
+        assert_bit_set(msr, BUSY);
+        assert_bit_clear(msr, RQM);
+    }
+
     while (!get_irq(FLOPPY_IRQ)) {
         /* qemu involves a timer with READ ID... */
         clock_step(1000000000LL / 50);
     }
 
+    msr = inb(FLOPPY_BASE + reg_msr);
+    assert_bit_set(msr, BUSY | RQM | DIO);
+
     st0 = floppy_recv();
     floppy_recv();
     floppy_recv();
     cyl = floppy_recv();
     head = floppy_recv();
     floppy_recv();
+    g_assert(get_irq(FLOPPY_IRQ));
     floppy_recv();
+    g_assert(!get_irq(FLOPPY_IRQ));
 
     g_assert_cmpint(cyl, ==, 0);
     g_assert_cmpint(head, ==, 0);
@@ -443,18 +466,29 @@ static void test_read_id(void)
     g_assert(!get_irq(FLOPPY_IRQ));
     floppy_send(head << 2 | drive);
 
+    msr = inb(FLOPPY_BASE + reg_msr);
+    if (!get_irq(FLOPPY_IRQ)) {
+        assert_bit_set(msr, BUSY);
+        assert_bit_clear(msr, RQM);
+    }
+
     while (!get_irq(FLOPPY_IRQ)) {
         /* qemu involves a timer with READ ID... */
         clock_step(1000000000LL / 50);
     }
 
+    msr = inb(FLOPPY_BASE + reg_msr);
+    assert_bit_set(msr, BUSY | RQM | DIO);
+
     st0 = floppy_recv();
     floppy_recv();
     floppy_recv();
     cyl = floppy_recv();
     head = floppy_recv();
     floppy_recv();
+    g_assert(get_irq(FLOPPY_IRQ));
     floppy_recv();
+    g_assert(!get_irq(FLOPPY_IRQ));
 
     g_assert_cmpint(cyl, ==, 8);
     g_assert_cmpint(head, ==, 1);
-- 
1.8.3.1